| Provadia to Olympia Heights (Florida) | 5,835.71 mi (9,391.67 km) |
| Provadia to Omaha (Nebraska) | 5,626.68 mi (9,055.27 km) |
| Provadia to On Top of the World Designated Place (Florida) | 5,750.54 mi (9,254.60 km) |
| Provadia to Onalaska (Wisconsin) | 5,330.00 mi (8,577.81 km) |
| Provadia to Oneida (New York) | 4,816.76 mi (7,751.82 km) |
| Provadia to Oneonta (New York) | 4,821.89 mi (7,760.08 km) |
| Provadia to Ontario (California) | 6,663.23 mi (10,723.43 km) |
| Provadia to Ontario (Oregon) | 6,023.35 mi (9,693.64 km) |
| Provadia to Opa-locka (Florida) | 5,823.38 mi (9,371.83 km) |
| Provadia to Opelika (Alabama) | 5,696.99 mi (9,168.41 km) |
| Provadia to Opelousas (Louisiana) | 6,067.35 mi (9,764.45 km) |
| Provadia to Orange (California) | 6,683.18 mi (10,755.54 km) |
| Provadia to Orange (Texas) | 6,151.99 mi (9,900.68 km) |
| Provadia to Orange City (Florida) | 5,717.20 mi (9,200.94 km) |
| Provadia to Orangeburg (South Carolina) | 5,474.95 mi (8,811.08 km) |
